Why is Tintin popular in France?

Tintin is a popular fiction character in France and elsewhere, for several reasons.

The Tintin series is long-established, and kids going to their grandparents' are often encouraged to read them. Dialogues are judged well-written, devoid of slang or foul Words. The gallery of Tintin sidekicks adds to the fun. The neat style of the drawings is a standard for many people. All that established the series as being of very good quality.